In the movie, The Bear, a small orphaned grizzly cub finds itself lost in the Alaskan wilderness. While scraping the ground for food, he looks up and sees an adult cougar fixed on him. The cougar had obviously been stalking him and was sighting him in for the kill -- at only 10 yards away.
The orphaned cub does what it can do, and instinctively stands up on its hind legs to look at big as possible. In a matter of seconds, the cougar looks startled and bounds off in the opposite direction, frightened by what it's seen.
What the little cub did not know as it pushed itself up onto its hind legs was that a large male grizzly was standing behind the cub, towering over him; reared up on his massive hindlegs, neck hairs grizzled and bristling. A protector had moved in behind the cub, with ghost-like stealth. The cub didn't know what kind of force stood behind him.
But that's what the cougar saw.
I often wonder what sort of horrors I've been protected from, unbeknownst to me. Though it often seems as if we're the abandoned and orphaned cub, it's far more likely that the Ghost Bear has come behind us more than we know.